Probability Trees

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  • Created by: Fiona S
  • Created on: 21-02-15 01:00

Probability trees are used to calculate the probabilities of successive (one after another) events.

Example

Eve has 3 red socks and 2 blue socks. She picks a sock at random, notes the colour, then puts it back in the drawer. She then picks another sock at random.

(http://www.cimt.plymouth.ac.uk/projects/mepres/book8/bk8i10/s4q1t1.gif)

If you are going along the branches you multiply probabilities.

Find the

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